The application claims the benefit of Taiwan application serial No. 107107922, filed on Mar. 8, 2018, and the entire contents of which are incorporated herein by reference.
The present invention generally relates to a fan and, more particularly, to a fan which can improve the convenience in assembly.
An air-curtain apparatus with a fan is generally installed in the head of the door frame at both the entrance and the exit of a supermarket or a department store in order to prevent the escaping of the cool air and the intrusion of the foreign objects, such as mosquitos, flies and/or the insects. The air blows downwardly to create an air wall between the indoor space and the outdoor space, which prevents the escaping of the cool air and the entry of the polluted air or dust.
The fan as mentioned above includes a motor frame, an impeller assembly and a housing. A motor is installed in the motor frame. The impeller assembly is connected to the motor and is driven to rotate by the motor. The housing forms a compartment for receiving the impeller assembly. The housing includes an air inlet and an air outlet. The air inlet is located at one end of the housing. During the operation of the motor, the impeller assembly rotates to draw the air from the air inlet of the housing and to expel the air out of the compartment via the air outlet of the housing. Thus, a significant amount of air is being sent out of the housing, forming the air wall.
However, the motor frame, the impeller assembly and the housing are assembled using a plurality of fasteners such as screws. Thus, during the assembly of the fan, it requires labor effort to align the screw holes of the components and to respectively insert the fasteners through the pairs of the screw holes. Disadvantageously, the assembly of the fan is time-consuming. Since the assembly is carried out by the labor effort, the assembly is inconvenient and the manufacturing cost is increased. Thus, the efficiency is low.
In light of the above, it is necessary to improve the conventional fan.
It is therefore the objective of this invention to provide a fan which reduces the assembly procedure and lowers the labor cost. Thus, the convenience and efficiency in assembly are improved.
In an aspect, a fan includes a motor, two frames, an impeller and a housing assembly. The two frames are coupled with an outer periphery of the motor and are engaged with each other by way of fastening. Each of the two frames includes one groove. The impeller is connected to the motor and is driven to rotate by the motor. The housing assembly houses the impeller and includes a first housing part and a second housing part. The first and second housing parts are engaged with each other by way of fastening. A protruding lip is provided on one of two end faces of the first housing part which is relatively adjacent to the motor. Another protruding lip is provided on one of two end faces of the second housing part which is relatively adjacent to the motor. The protruding lip and the other protruding lip are engaged with the grooves of the two frames.
Based on the above, the assembly of the two frames, the first housing part and the second housing part of the fan can be completed simply by way of fastening. The invention does not require the operators to align the screwing holes of the components and to insert the fasteners therethrough. Advantageously, the assembly procedure of the fan is simplified and the labor cost is reduced, improving the convenience and efficiency in assembly of the fan.
In an example, the housing assembly further includes at least one fastening member, and the first and second housing parts are fastened with each other through the at least one fastening member. Thus, the convenience and efficiency in assembly and disassembly of the fan is improved under the simple structure which permits fast assembly and disassembly.
In the example, at least one first coupling portion is provided on each of the two end faces of the first housing part, at least one second coupling portion is provided on each of the two end faces of the second housing part, and the at least one first coupling portion and the at least one second coupling portion are connected to each other by way of fastening through the at least one fastening member. Thus, a secure engagement of the first and second housings is provided.
In the example, each of the at least one first coupling portion includes a recess and each of at least one second coupling portion includes a tongue inserted into the recess. Thus, the structure is simple which reduces the manufacturing cost and improves the convenience in assembly.
In the example, the two frames are fastened with each other through at least one fastening member. Thus, the convenience and efficiency in assembly and disassembly of the fan is improved under the simple structure which permits fast assembly and disassembly.
In the example, one of the two frames includes at least one first engagement portion, and another of the two frames includes at least one second engagement portion engaged with the at least one first engagement portion by way of fastening through the at least one fastening member. Thus, the engagement effect and the convenience in assembly of the two frames are improved.
In the example, each of the at least one first engagement portion includes a first concave portion and a first protruding portion, and each of the at least one second engagement portion includes a second concave portion and a second protruding portion. The first protruding portion is engaged with the second concave portion, and the second protruding portion is engaged with the first concave portion. Thus, the structure is simple which reduces the manufacturing cost and improves the convenience in assembly.
In the example, one of the two frames includes a base, another of the two frames includes another base, and the base and the other base are connected to each other and placed on a planar surface. Thus, the two bases can support the motor, thus fixing the motor in a predetermined location.
In the example, the first housing part and the second housing part are coupled with each other to form a support, and a bottom face of the support is in a same level as a level of the base and a level of the base. Thus, the two bases can support the motor, thus fixing the motor in a predetermined location.
In the example, the fan further includes a buffering member. One of the two frames includes a receiving portion, another of the two frames includes another receiving portion, and the receiving portion and the other receiving portion are connected to each other to receive the buffering member. Thus, the buffering member can reduce the vibration.
In the example, the fan further includes another impeller and another housing assembly. The other impeller is driven to rotate by the motor and is located at one side of the motor opposite to another side of the motor where the impeller is. The other housing assembly houses the other impeller. One of the two frames includes two grooves, and another of the two frames includes another two grooves. Thus, a larger air volume is provided and the utility of the fan is improved.
The present invention will become more fully understood from the detailed description given hereinafter and the accompanying drawings which are given by way of illustration only, and thus are not limitative of the present invention, and wherein:
In the various figures of the drawings, the same numerals designate the same or similar parts. Furthermore, when the terms “first”, “second”, “third”, “fourth”, “inner”, “outer”, “top”, “bottom”, “front”, “rear”, “axial”, “radial”, “longitudinal”, “transverse”, “length”, “width”, “height” and similar terms are used hereinafter, it should be understood that these terms have reference only to the structure shown in the drawings as it would appear to a person viewing the drawings, and are utilized only to facilitate describing the invention.
The motor 1 provides power to the impeller 3. The motor 1 includes a shaft 11 rotatably connected to the impeller 3. In this embodiment, the motor 1 can have any structure and shape as long as the motor 1 can smoothly drive the impeller 3 to rotate.
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Specifically, each of the at least one first engagement portion 23 includes a first concave portion 231 and a first protruding portion 232. Similarly, each of the at least one second engagement portion 23′ includes a second concave portion 231′ and a second protruding portion 232′. The first protruding portion 232 can be engaged with the second concave portion 231′. The second protruding portion 232′ can be engaged with the first concave portion 231. In this arrangement, the structure is simple which reduces the manufacturing cost and improves the convenience in assembly.
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It is noted that the first housing part 41 and the second housing part 42 can be coupled with each other to form a support 45. The bottom face of the support 45 is preferably in the same level as those of the bases 24 and 24′. In this arrangement, the support 45 can support the motor 1, avoiding the motor 1 from hanging in the air. Thus, the motor 1 can be fixed in a predetermined location.
Referring to
In conclusion, in the fan according to the invention, the assembly of the fan is completed by simply fastening the two frames with each other and fastening the first and second housing parts with each other. The assembly of the fan does not require the operators to align the screwing holes of the components and to accordingly insert the fasteners therethrough. Therefore, the complexity in assembly of the fan can be simplified and the labor cost is reduced, thereby improving the convenience and efficiency in assembly of the fan.
Although the invention has been described in detail with reference to its presently preferable embodiments, it will be understood by one of ordinary skill in the art that various modifications can be made without departing from the spirit and the scope of the invention, as set forth in the appended claims.
Number | Date | Country | Kind |
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107107922 | Mar 2018 | TW | national |